›› 2015, Vol. 42 ›› Issue (12): 3268-3273.doi: 10.16431/j.cnki.1671-7236.2015.12.023

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Study on the Biological Activity of a Spray Dried Bacteriocin

WEI Xu-biao, WU Ru-juan, ZHENG Zhao-jun, MA Guang, LIAO Xiu-dong, ZHANG Ri-jun   

  1. State Key Laboratory of Animal Nutrition, Laboratory of Feed Biotechnology, China Agricultural University, Beijing 100193, China
  • Received:2015-06-18 Online:2015-12-20 Published:2015-12-30

Abstract: The standard curve of two antibiotics (colistin sulfate and bacitracin zinc) was carried out to assess antimicrobial activity of bacteriocin,which obtained from our earlier work,using cup-dish method.In addition,we also observed the effects of the reaction temperature on the antibacterial activity of the bacteriocin.Results showed that 125 mg/mL bacteriocin displayed similar antibacterial activity to 26 mg/mL colistin sulfate or 11.9 mg/mL bacitracin zinc.Furthermore,the bacteriocin remained good thermal stability under high temperature (nearly 60 to 80 ℃) in 15 minutes.Overall,this research built a direct relationship between this bacteriocin and antibiotics,and testified good stablility of this bacteriocin,providing theoretical support and technology reference to promote its large scale production.

Key words: bacteriocin; antibiotics; antibacterial activity; thermal stability

CLC Number: